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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">cancersp</journal-id><journal-title-group><journal-title xml:lang="ru">Южно-Российский онкологический журнал/ South Russian Journal of Cancer</journal-title><trans-title-group xml:lang="en"><trans-title>South Russian Journal of Cancer</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2686-9039</issn><publisher><publisher-name>АНО "Перспективы онкологии"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37748/2686-9039-2023-4-1-4</article-id><article-id custom-type="edn" pub-id-type="custom">HCHSKM</article-id><article-id custom-type="elpub" pub-id-type="custom">cancersp-213</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Основные и минорные популяции лимфоцитов: локальные особенности при различных стадиях рака ободочной кишки</article-title><trans-title-group xml:lang="en"><trans-title>Major and minor populations of lymphocytes: local features in different stages of colon cancer</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0874-5261</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сагакянц</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Sagakyants</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Сагакянц Александр Борисович – к.б.н., доцент, заведующий лабораторией иммунофенотипирования опухолей, ФГБУ «НМИЦ онкологии» Минздрава России, г. Ростов-на-Дону, Российская Федерация.</p><p>ORCID: https://orcid.org/0000-0003-0874-5261, SPIN: 7272-1408, AuthorID: 426904, ResearcherID: M-8378-2019, Scopus Author ID: 24329773900</p></bio><bio xml:lang="en"><p> </p><p>Aleksandr B. Sagakyants – Cand. Sci. (Biol.), associate professor, head of the laboratory of tumor immunophenotyping, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation. </p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0003-0874-5261," ext-link-type="uri">https://orcid.org/0000-0003-0874-5261,</ext-link> SPIN: 7272-1408, AuthorID: <ext-link xlink:href="https://elibrary.ru/author_profile.asp?id=426904" ext-link-type="uri">426904</ext-link>, ResearcherID: <ext-link xlink:href="https://www.webofscience.com/wos/author/record/M-8378-2019" ext-link-type="uri">M-8378-2019</ext-link>, Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=24329773900" ext-link-type="uri">24329773900</ext-link></p></bio><email xlink:type="simple">asagak@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3561-098X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дженкова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dzhenkova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Дженкова Елена Алексеевна – д.б.н., доцент, ученый секретарь, ФГБУ «НМИЦ онкологии» Минздрава России, г. Ростов-на-Дону, Российская Федерация.</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-3561-098X" ext-link-type="uri">https://orcid.org/0000-0002-3561-098X</ext-link>, SPIN: 6206-6222, AuthorID: 697354, ResearcherID: <ext-link xlink:href="https://www.webofscience.com/wos/author/record/K-9622-2014" ext-link-type="uri">K-9622-2014</ext-link>, Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=6507889745" ext-link-type="uri">6507889745</ext-link></p></bio><bio xml:lang="en"><p> </p><p>Elena A. Dzhenkova – Dr. Sci. (Biol.), academic secretary, National Medical Research Centre, Rostov-on-Don, Russian Federation.</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-3561-098X" ext-link-type="uri">https://orcid.org/0000-0002-3561-098X</ext-link>, SPIN: 6206-6222, AuthorID: 697354, ResearcherID: <ext-link xlink:href="https://www.webofscience.com/wos/author/record/K-9622-2014" ext-link-type="uri">K-9622-2014</ext-link>, Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=6507889745" ext-link-type="uri">6507889745</ext-link></p></bio><email xlink:type="simple">rnioi@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0328-9714</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мирзоян</surname><given-names>Э. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mirzoyan</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Мирзоян Эллада Арменовна – аспирант, ФГБУ «НМИЦ онкологии» Минздрава России, г. Ростов-на-Дону, Российская Федерация.</p><p>ORCID: https://orcid.org/0000-0002-0328-9714, SPIN: 2506-8605, AuthorID: 1002948, ResearcherID: AAZ-2780-2021, Scopus Author ID: 57221118516</p></bio><bio xml:lang="en"><p> </p><p>Ellada A. Mirzoyan – PhD student, National Medical Research Centre of Oncology, Rostov-on-Don, Russian Federation. </p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-0328-9714," ext-link-type="uri">https://orcid.org/0000-0002-0328-9714,</ext-link> SPIN: 2506-8605, AuthorID: <ext-link xlink:href="https://elibrary.ru/author_profile.asp?id=1002948" ext-link-type="uri">1002948</ext-link>, ResearcherID: <ext-link xlink:href="https://www.webofscience.com/wos/author/record/AAZ-2780-2021" ext-link-type="uri">AAZ-2780-2021</ext-link>, Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=57221118516" ext-link-type="uri">57221118516</ext-link></p></bio><email xlink:type="simple">ellada.mirzoyan@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6496-9641</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Новикова</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Novikova</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Новикова Инна Арнольдовна – к.м.н., заместитель генерального директора по науке, ФГБУ «НМИЦ онкологии» Минздрава России, г. Ростов-на-Дону, Российская Федерация.</p><p>ORCID: https://orcid.org/0000-0002-6496-9641, SPIN: 4810-2424, AuthorID: 726229, ResearcherID: E-7710-2018, Scopus Author ID: 7005153343</p></bio><bio xml:lang="en"><p> </p><p>Inna A. Novikova – Cand. Sci. (Med.), deputy director for science, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation.</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-6496-9641" ext-link-type="uri">https://orcid.org/0000-0002-6496-9641</ext-link>, SPIN: 4810-2424, AuthorID: <ext-link xlink:href="https://elibrary.ru/author_profile.asp?id=726229" ext-link-type="uri">726229</ext-link>, ResearcherID: <ext-link xlink:href="https://www.webofscience.com/wos/author/record/E-7710-2018" ext-link-type="uri">E-7710-2018</ext-link>, Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=7005153343" ext-link-type="uri">7005153343</ext-link></p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1410-122X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Златник</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Zlatnik</surname><given-names>E. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Златник Елена Юрьевна – д.м.н., профессор, главный научный сотрудник лаборатории иммунофенотипирования опухолей, ФГБУ «НМИЦ онкологии» Минздрава России, г. Ростов-на-Дону, Российская Федерация.</p><p>ORCID: https://orcid.org/0000-0002-1410-122X,  SPIN: 4137-7410, AuthorID: 327457, Scopus Author ID: 6603160432</p></bio><bio xml:lang="en"><p> </p><p>Elena Yu. Zlatnik – Dr. Sci. (Med.), professor, chief researcher of the laboratory of tumor immunophenotyping, National Medical Research Centre of Oncology, Rostov-on-Don, Russian Federation.</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-1410-122X," ext-link-type="uri">https://orcid.org/0000-0002-1410-122X,</ext-link>  SPIN: 4137-7410, AuthorID: <ext-link xlink:href="https://elibrary.ru/author_profile.asp?id=327457" ext-link-type="uri">327457</ext-link>, Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=6603160432" ext-link-type="uri">6603160432</ext-link></p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8522-1026</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бондаренко</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Bondarenko</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Бондаренко Елена Сергеевна – младший научный сотрудник лаборатории иммунофенотипирования опухолей, ФГБУ «НМИЦ онкологии» Минздрава России, г. Ростов-на-Дону, Российская Федерация.</p><p>ORCID: https://orcid.org/0000-0002-8522-1026, SPIN: 3117-4040, AuthorID: 865798, Scopus Author ID: 57200132337</p></bio><bio xml:lang="en"><p> </p><p>Elena S. Bondarenko – junior research fellow at the laboratory of tumor immunophenotyping, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation.</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-8522-1026," ext-link-type="uri">https://orcid.org/0000-0002-8522-1026,</ext-link> SPIN: 3117-4040, AuthorID: <ext-link xlink:href="https://elibrary.ru/author_profile.asp?id=865798" ext-link-type="uri">865798</ext-link>, Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=57200132337" ext-link-type="uri">57200132337</ext-link></p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6881-2281</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шапошников</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shaposhnikov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Шапошников Александр Васильевич – д.м.н., профессор, главный научный сотрудник торакоабдоминального отдела, ФГБУ «НМИЦ онкологии» Минздрава России, г. Ростов-на-Дону, Российская Федерация.</p><p>ORCID: https://orcid.org/0000-0001-6881-2281, SPIN: 8756-9438, AuthorID: 712823</p></bio><bio xml:lang="en"><p> </p><p>Alexander V. Shaposhnikov – Dr. Sci. (Med.), professor, chief researcher of the thoracoabdominal department, National Medical Research Centre of Oncology, Rostov-on-Don, Russian Federation.</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0001-6881-2281," ext-link-type="uri">https://orcid.org/0000-0001-6881-2281,</ext-link> SPIN: 8756-9438, AuthorID: <ext-link xlink:href="https://elibrary.ru/author_profile.asp?id=712823" ext-link-type="uri">712823</ext-link></p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7328-8074</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Маслов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Maslov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Маслов Андрей Александрович – д.м.н., профессор, главный врач, ФГБУ «НМИЦ онкологии» Минздрава России, г. Ростов-на-Дону, Российская Федерация.</p><p>ORCID: https://orcid.org/0000-0001-7328-8074, SPIN: 5963-5915, AuthorID: 817983</p></bio><bio xml:lang="en"><p> </p><p>Andrey A. Maslov – Dr. Sci. (Med.), professor, chief physician, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation.</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0001-7328-8074," ext-link-type="uri">https://orcid.org/0000-0001-7328-8074,</ext-link> SPIN: 5963-5915, AuthorID: <ext-link xlink:href="https://elibrary.ru/author_profile.asp?id=817983" ext-link-type="uri">817983</ext-link></p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каймакчи</surname><given-names>О Ю</given-names></name><name name-style="western" xml:lang="en"><surname>Kaymakchi</surname><given-names>O. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Каймакчи Олег Юрьевич – д.м.н., доцент кафедры онкологии, ФГБОУ ВО «РостГМУ» Минздрава России, г. Ростов-на-Дону, Российская Федерация. AuthorID: 335064</p></bio><bio xml:lang="en"><p> </p><p>Oleg Yu. Kaymakchi – Dr. Sci. (Med.), associate professor of oncology, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation.</p><p>AuthorID: 335064</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3976-0210</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пржедецкий</surname><given-names>Ю В</given-names></name><name name-style="western" xml:lang="en"><surname>Przhedetskiy</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Пржедецкий Юрий Валентинович – д.м.н., профессор, заведующий отделением реконструктивно-пластической хирургии и онкологии, ФГБУ «НМИЦ онкологии» Минздрава России, г. Ростов-на-Дону, Российская Федерация.</p><p>ORCID: https://orcid.org/0000-0003-3976-0210, SPIN: 3888-6265, AuthorID: 702006, ResearcherID: ATT-7598-2020, Scopus Author ID: 57188731912</p></bio><bio xml:lang="en"><p> </p><p>Yuriy V. Przhedetskiy – Dr. Sci. (Med.), professor, head of the department of reconstructive plastic surgery and oncology, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation.</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0003-3976-0210," ext-link-type="uri">https://orcid.org/0000-0003-3976-0210,</ext-link> SPIN: 3888-6265, AuthorID: <ext-link xlink:href="https://elibrary.ru/author_profile.asp?id=702006" ext-link-type="uri">702006</ext-link>, ResearcherID: <ext-link xlink:href="https://www.webofscience.com/wos/author/record/ATT-7598-2020" ext-link-type="uri">ATT-7598-2020</ext-link>, Scopus Author ID: 57188731912</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9468-134X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шевченко</surname><given-names>А Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Shevchenko</surname><given-names>A. N</given-names></name></name-alternatives><bio xml:lang="ru"><p> </p><p>Шевченко Алексей Николаевич – д.м.н., профессор, заведующий отделением онкоурологии, ФГБУ «НМИЦ онкологии» Минздрава России, г. Ростов-на-Дону, Российская Федерация.</p><p>ORCID: https://orcid.org/0000-0002-9468-134X, SPIN: 2748-2638, AuthorID: 735424, ResearcherID: Y-5387-2018, Scopus Author ID: 57192283096</p></bio><bio xml:lang="en"><p> </p><p>Alexey N. Shevchenko – Dr. Sci. (Med.), professor, head of the oncourology department, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation.</p><p>ORCID: <ext-link xlink:href="https://orcid.org/0000-0002-9468-134X," ext-link-type="uri">https://orcid.org/0000-0002-9468-134X,</ext-link> SPIN: 2748-2638, AuthorID: <ext-link xlink:href="https://elibrary.ru/author_profile.asp?id=735424" ext-link-type="uri">735424</ext-link>, ResearcherID: <ext-link xlink:href="https://www.webofscience.com/wos/author/record/Y-5387-2018" ext-link-type="uri">Y-5387-2018</ext-link>, Scopus Author ID: <ext-link xlink:href="https://www.scopus.com/authid/detail.uri?authorId=57192283096" ext-link-type="uri">57192283096</ext-link></p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «НМИЦ онкологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Centre for Oncology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО «РостГМУ» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Rostov State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>01</day><month>02</month><year>2023</year></pub-date><volume>4</volume><issue>1</issue><fpage>34</fpage><lpage>42</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сагакянц А.Б., Дженкова Е.А., Мирзоян Э.А., Новикова И.А., Златник Е.Ю., Бондаренко Е.С., Шапошников А.В., Маслов А.А., Каймакчи О.Ю., Пржедецкий Ю.В., Шевченко А.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Сагакянц А.Б., Дженкова Е.А., Мирзоян Э.А., Новикова И.А., Златник Е.Ю., Бондаренко Е.С., Шапошников А.В., Маслов А.А., Каймакчи О.Ю., Пржедецкий Ю.В., Шевченко А.Н.</copyright-holder><copyright-holder xml:lang="en">Sagakyants A.B., Dzhenkova E.A., Mirzoyan E.A., Novikova I.A., Zlatnik E.Y., Bondarenko E.S., Shaposhnikov A.V., Maslov A.A., Kaymakchi O.Y., Przhedetskiy Y.V., Shevchenko A.N.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.cancersp.com/jour/article/view/213">https://www.cancersp.com/jour/article/view/213</self-uri><abstract><p>Цель исследования. Выявить особенности состава иммунокомпетентных клеток при раке ободочной кишки (РОК) в зависимости от стадии процесса и выделить прогностические факторы течения заболевания.Материалы и методы. В исследование включено 50 пациентов РОК: I стадия – 4 пациента (8 %), II – 25 (50 %), III – 21 (42 %). Всем больным на начальном этапе было выполнено стандартное оперативное вмешательство. Полученный материал был использован для последующих исследований: из ткани опухоли, перитуморальной зоны (1–3 см от опухоли) была получена клеточная суспензия, которую обрабатывали при помощи панели антител (Becton Dickinson, USA) для выявления основных субпопуляций лейкоцитов и лимфоцитов.Результаты. В тканях опухолей группы пациентов I + II стадии отмечено уменьшение относительного количества ДП, ДН, NKT и CD19+ по сравнению с перитуморальной зоной на 33 %, 42 %, 31 % и 82 % соответственно. В тканях опухоли пациентов с III стадией выявлено повышение относительного количества CD3+, CD4+, NK на 57 %, 34 %, 48 % и снижение ДП, ДН, NKT, CD19+ на 33 %, 74 %, 31 %, 59 % по сравнению с тканью перитуморальной зоны. В опухоливыявлено уменьшение ДП, ДН, NKT, CD19+ на 78 %, 74 %, 39 %, 60 %, а также увеличение относительного количества лимфоцитов по сравнению с линией резекции на 138 % соответственно. При проведении сравнительного анализа локальных иммунологических показателей в тканях опухолей больных РОК выявлено, что в тканях опухолей группы пациентов III стадии отмечено увеличение относительного количества лимфоцитов и CD19+ на 58 % и 87 % и снижение ДП и ДН на 33 % и 27 % по сравнению с тканями опухолей группы I + II стадии.Заключение. Таким образом, полученные особенности локального популяционного и субпопуляционного состава иммунокомпетентных клеток при РОК в зависимости от стадии опухолевого процесса могут быть использованы при прогнозировании клинического течения заболевания.</p></abstract><trans-abstract xml:lang="en"><sec><title>Purpose of the study</title><p>Purpose of the study. Was to reveal characteristics of the immunocompetent cells in colon cancer (CC) according to the disease stage, and to identify prognostic factors of cancer development.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The study included 50 patients with CC: stage I – 4 patients (8 %), II – 25 (50 %), III – 21 (42 %). All patients underwent standard surgical intervention at the initial stage, the obtained material was used for subsequent studies: a cell suspension was obtained from the tumor tissue, peritumoral zone (1–3 cm from the tumor), which was treated with an antibody panel (Becton Dickinson, USA) to identify the main subpopulations of leukocytes and lymphocytes.</p></sec><sec><title>Results</title><p>Results. The tumor tissues of patients with stages I + II showed a decrease in the relative number of DP, DN, NKT and CD19+, compared to peritumoral tissues, by 33 %, 42 %, 31 % and 82 % respectively. Tumor tissues of stage III patients demonstrated elevated relative numbers of CD3+, CD4+, NK by 57 %, 34 %, 48 %, and decreased DP, DN, NKT, CD19+ by 33 %, 74 %, 31 %, 59 %, compared to peritumoral tissues. DP, DN, NKT and CD19+ in the tumor decreased by 78 %, 74 %, 39 %, 60 %, respectively, and the relative number of lymphocytes increased by 138 %, compared to the tissues of the resection line. A comparative analysis of local immunological parameters in the tumor tissues of patients with СС revealed that the relative numbers of lymphocytes and CD19+ were 58 % and 87 % higher, and DP and DN were 33 % and 27 % lower in tumor tissues of stage III patients, compared to tumor tissues of stage I + II patients.</p></sec><sec><title>Conclusion</title><p>Conclusion. Thus, the obtained features of the local population and subpopulation composition of immunocompetent cells in CC, depending on the stage of the tumor process, can be used to predict the clinical course of the disease.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>онкология</kwd><kwd>рак ободочной кишки</kwd><kwd>локальный клеточный иммунитет.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>oncology</kwd><kwd>colon cancer</kwd><kwd>local cellular immunity</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках выполнения государственного задания по теме «Разработка прогностических и предиктивных алгоритмов на основе выявления новых иммунологических и молекулярно-генетических характеристик злокачественных опухолей и их микроокружения», рег. № 121031100251-9.</funding-statement><funding-statement xml:lang="en">The work was performed as part of the state assignment on the "Development of prognostic and predictive algorithms based on the identification of new immunological and molecular genetic characteristics of malignant tumors and their microenvironment" topic, regist. 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